5.Motor Cars and the Application of Mechanical Power to Road Vehicles by Rhys Jenkins (1902)"The third epicyclic-gear train, called the " compound gear," is combined with
the low- gear train, and gives an intermediate speed forward. Suspension. ..."

7.The Theory of Machines: Part I. The Principles of Mechanism. Part II by Robert William Angus (1917)"95) and shear (Fig. 94). 11. Explain and illustrate the inversion of the chain.
Show that the epicyclic gear train is an inversion of the ordinary train. ..."

8.Machine Design: Hoists, Derricks, Cranes by Howard Drysdale Hess (1912)"... Towne Manufacturing Company, differs from the others in using an epicyclic
gear train. The reduction in this train is calculated as follows: R = radius ..."